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Old 08-11-2002, 08:52 PM
BENZ-LGB's Avatar
BENZ-LGB BENZ-LGB is offline
Strong, silent type
Join Date: Apr 2001
Location: Southern California
Posts: 1,663
Thumbs up Coolant temp and Cool Harness (c)

My 420SEL normally runs failry cool. The temp in my daughter's 300TE, however, had a tendency to shoot up, especially in stop and go traffic.

I did three things to help lower temps....

1. Lowered the coolant/water mix ratio to 40/60;

2. Added WaterWetter; and

3. Bought and installed a Cool Harness (c) designed, made and sold by our own JimF.

Yesterday I drove in the San Fernando Valley, where temps were in the hundreds.

The lower coolant content plus the WaterWetter helped keep coolant temps low. Whenever the temps creeped north of 90 degrees, the CH would kick in, helping to cool the engine. Even while waiting at the In and Out drive-through, the temp never shot past 95 degrees, even when ambient temps were in triple digits.

Good product works as advertised.....

PS I also bought one CH for my 420SEL, but the W126 engines seem to run cooler than the W124, or they have a better cooling system...

If you are having cooling issues, check your coolant/water ratio and see what happens....
Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

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